David lancaster dwinnell



(No Model.)

D; L. DWINNELL.

GLOSBT GISTBRN.

No. 432,820. vPatented July 22, 1890.

UNITED STATES PATENT OEEICE,

DAVID LANCASTER DVINNELL, OF MONTREAL, QUEBEC, CANADA, ASSIGNOR OF ONE-HALF TO GEORGE ANGUS MILLER AND CHARLES HERBERT MIL- LER, OF SAME PLACE.

CLOSET-CISTERN..

SPECIFICATION forming part of Letters Patent No. 432,820, dated July 22, 1890.

Application led September 24, 1889. Serial No. 324,977- (No model.)

suitable inlet for the water and an outlet extending through the bottom 0f the tank with its open upper end approximately at the water-level, and a vertically-operating bell inclosing the outer pipe and of sligl'ltly greater height, the water in the tank being free to enter between the bell and the pipe.

In the accompanyingdrawings, Figure l is a sectional View of a tank with my improved iiushing-valve, `and Fig. 2 is a plan view of the same.

In the figures, A represents the tank, which is of ordinary construction, provided with an inlet-pipe E, having the valve D connected with the pivoted lever C by the rod C', and the end of the lever C is provided with a tioat B, so as to close the inlet-opening when the water has reached a certain level.

construction. and may be varied, as found` rlhis arrangement is also of ordinary desirable. The outlet-pipe F passes, preferably, through the center of the tank, with its open upper end being approximately at the water-level- Encircling this pipe is my improved bell G, which is of greater height than the pipe F, within the tank, extending above the same and above the Water-line, forming in its upper part an air-chamber II. The lower edge of the bell G is provided with projections or feet K, thus forming a passage between the lower edge of the bell and the bottom of the tank for the free entrance of the water to the interior of the bell. The bell is operated vertically by means of the ordinary chain or cord extending down within reach of the handof the operator, and this chain or cord O is connected to the bell through a'pivoted leverM. By drawing upon the chain O the bell may be lifted, as shown in dotted lines in Fig. 1, and when the chain is released the bell will fall by its own weight to its normal position.

In the operation of the device, by simply raising the bell and dropping it suddenly, its action, by reason of its enlarged lower portion and its contracted upper portion, will be to encompass a larger amount of water by reason of its enlarged mouth than the 6o upper part of the bell can contain, and this will start the Water to flowing over the edge of the pipe F, and thus flush the closet, while at theY same time the air in the chamber H, as the bell descends, is more or less confined, and as its only way of escape is through the pipe F it will have the effect of putting pressure upon the water passing through theV pipe F, and thus aid the iiushing action.

I am aware that it is not new to provide a bell having its flaring lower end confined by walls making a tight joint with openings at the top of the bell for the inlet and exit of the water to the discharge-pipe; and 75 I do not broadly claim a flaring bell, my invention being limited `to a bell of this shape having a passage for the water under its lower edge with means for elevating it, whereby, as the bell descends by gravity, the en- 8o larged lower end gathers in more water than the reduced upper end can contain, and thus the surplus is forced over the edge of the discharge-pipe.

Having thus' described my invention, what 85 I claim is- In combination with a tank and inlet-pipe,

a valve for controlling the inlet, an outletpipe, a bell of slightly greater height than the outlet-pipe having an enlarged lower end 9o with a passage for the Water under its lower edge, said bell surrounding said pipe and resting on the plane bottom of the tank, and means for giving vertical movement to the bell, substantially as described.

Montreal, May 20, 1889.

DAVID LANCASTER DWINNELL.

Witnesses:

R. A. KELLOND, J. D. MILLER. 

